This is the 3562nd most frequent Catalan word.
nascut
"Born."
Here, "nascut" is the past participle of "néixer" (to be born), used in passive construction to express the location of someone's birth.
Vaig néixer a Barcelona, però he estat criat a Lleida.
I was born in Barcelona, but I was raised in Lleida.
In this case, "nascut" describes the innate quality of the pianist, meaning 'born with' certain abilities or traits.
És un pianista de talent nascut amb una oïda excepcional.
He is a talented pianist born with exceptional hearing.
Here, "nascut" is used metaphorically, often to signify the emergence or origin of abstract things like ideas or concepts.